Patents by Inventor Tomoko Aono

Tomoko Aono has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10863186
    Abstract: An image decoding apparatus is provided with a CT information decoding unit that decodes division information indicating a division method for binary tree division with respect to a coding node of a coding tree unit, and performs the binary tree division with respect to the coding node by referring to the division information of another decoded coding node.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: December 8, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yoshiya Yamamoto, Yukinobu Yasugi, Tomohiro Ikai, Tomoko Aono
  • Publication number: 20200366894
    Abstract: An image decoding apparatus (31) includes a CT information decoding unit (10) configured, in each coding tree, to decode a constraint flag indicating whether or not to constrain decoding a prediction unit, and a CU decoding unit (20) configured, in the coding tree, to decode a prediction unit in a coding node to be decoded first and to not decode a prediction unit in another coding node, in a case that the constraint flag indicates constraint of decoding the prediction unit. According to the present invention, it is possible to reduce a coding amount of PU and complexity of coding/decoding an image while maintaining a split with a high degree of freedom by CT split (QT split and BT split).
    Type: Application
    Filed: August 4, 2020
    Publication date: November 19, 2020
    Inventors: TOMOHIRO IKAI, TOMOKO AONO
  • Publication number: 20200296380
    Abstract: The coding efficiency and the amount of processing can be further improved in methods that use the correlation between spatial and temporal directions to estimate parameters that are required for predictions. In LM prediction that predicts pixel values of chrominance, based on pixel values of luminance, an index for a filter that downsamples a luminance image is adaptively signalled.
    Type: Application
    Filed: September 7, 2018
    Publication date: September 17, 2020
    Inventors: Tomoko AONO, Tomohiro IKAI, Takeshi CHUJOH
  • Patent number: 10778976
    Abstract: An image decoding apparatus (31) includes a CT information decoding unit (10) configured, in each coding tree, to decode a constraint flag indicating whether or not to constrain decoding a prediction unit, and a CU decoding unit (20) configured, in the coding tree, to decode a prediction unit in a coding node to be decoded first and to not decode a prediction unit in another coding node, in a case that the constraint flag indicates constraint of decoding the prediction unit. According to the present invention, it is possible to reduce a coding amount of PU and complexity of coding/decoding an image while maintaining a split with a high degree of freedom by CT split (QT split and BT split).
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: September 15, 2020
    Assignees: SHARP KABUSHIKI KAISHA, FG Innovation Company Limited
    Inventors: Tomohiro Ikai, Tomoko Aono
  • Publication number: 20200260096
    Abstract: In a case that luminance information is used for a chrominance prediction in a separate coding tree structure, there is a problem that chrominance blocks cannot be decoded before all luminance blocks constituting a tree are decoded. An image decoding apparatus that splits an image into coding tree units (CTUs) that are rectangular for processing includes a CT information decoding unit configured to split a CTU of the CTUs into coding trees CTs and to process one or more color components as a single coding tree using one coding tree CT of the coding trees CTs or process two or more color components as a separate coding tree using two or more coding trees CTs of the coding trees CTs depending on a tree mode, a CU decoding unit configured to decode a split flag indicating whether to further split a CT of the CTs and to recursively perform block splitting, and an intra predictor configured to use a decoded image of one color component to generate a prediction image of another color component.
    Type: Application
    Filed: October 2, 2018
    Publication date: August 13, 2020
    Inventors: TOMOHIRO IKAI, TOMOKO AONO
  • Publication number: 20200236381
    Abstract: A value limiting filter includes a color space transform processing unit configured to transform an input image signal defined by a color space into an image signal of another color space, a clipping processing unit configured to perform processing of limiting a pixel value of the transformed image signal, and a color space inverse transform processing unit configured to transform the image signal having the limited pixel value into the image signal of the original color space.
    Type: Application
    Filed: September 21, 2018
    Publication date: July 23, 2020
    Inventors: Takeshi CHUJOH, Tomohiro IKAI, Tomoko AONO, Tomonori HASHIMOTO, Tianyang ZHOU, Yukinobu YASUGI
  • Publication number: 20200213619
    Abstract: For a reference pixel of a block on an upper side of a target block, in a chrominance component, one pixel (first reference pixel) for every two pixels of the target block is stored in a memory, and a pixel that is not stored in the memory (second reference pixel) is derived by interpolation from the first reference pixel, a predictor refers to the first reference pixel and the second reference pixel and calculates an intra prediction value of each pixel of the chrominance component of the target block.
    Type: Application
    Filed: May 22, 2018
    Publication date: July 2, 2020
    Inventors: Tomoko AONO, Tomohiro IKAI
  • Publication number: 20200195970
    Abstract: An image decoding device (31) includes a transform coefficient decoding unit (311) configured to decode a transform coefficient for a transform tree included in a coding unit. In the transform tree, the transform coefficient decoding unit splits a transform unit corresponding to luminance and then decodes the transform coefficient related to the luminance, and does not split the transform unit corresponding to chrominance and decodes the transform coefficient related to the chrominance.
    Type: Application
    Filed: April 23, 2018
    Publication date: June 18, 2020
    Inventors: Tomohiro IKAI, Tomoko AONO, Yukinobu YASUGI, Tomonori HASHIMOTO
  • Publication number: 20200177911
    Abstract: In a case of referring to information between pictures by means of inter prediction, the entire picture needs to be decoded even in a case of decoding a small region. In a case of referring to information within a picture by means of intra prediction, referring to information across a tile boundary is not possible. In a case that a pixel pointed by a sub-block level motion vector of a target block that is calculated by scaling based on an available motion vector acquired from a spatial neighboring block or a temporal neighboring block is not present within a tile sequence, a process of replacing the pixel value with a pixel value within the tile sequence is performed. In a case of referring to a pixel outside of a tile by means of intra prediction, a process of replacing the pixel value with that of a pixel within the tile is performed.
    Type: Application
    Filed: June 27, 2018
    Publication date: June 4, 2020
    Inventors: Tomoko AONO, Tomohiro IKAI, Takeshi CHUJOH, Tomonori HASHIMOTO, Yukinobu YASUGI
  • Publication number: 20200077099
    Abstract: An image decoding device includes a context determination unit configured to determine a context of split information of a target block with reference to split-related information of at least one neighboring block adjacent to the target block; and a split information decoding unit configured to decode the split information of the target block by using the context determined by the context determination unit.
    Type: Application
    Filed: December 8, 2017
    Publication date: March 5, 2020
    Inventors: Tomohiro IKAI, Yukinobu YASUGI, Tomoko AONO
  • Publication number: 20200053365
    Abstract: A device is provided with: a first transformer which transforms an coding unit (CU); and a second transformer which transforms a part of first transform coefficients output from the first transformer, wherein the second transformer transforms at least any of the first transform coefficients for a region (first region) having different sizes in a horizontal direction and a vertical direction or the first transform coefficients for a non-rectangular region (second region).
    Type: Application
    Filed: April 23, 2018
    Publication date: February 13, 2020
    Inventors: Tomoko AONO, Tomohiro IKAI
  • Publication number: 20190364279
    Abstract: Complexity of coding/decoding of a video is reduced. An image decoding apparatus (31) includes a CN information decoder (10) configured to hierarchically split a coding node by at least any of binary tree split and ternary tree split. The CN information decoder refers to a method of splitting an immediately higher node, which is a node one generation higher than a target node, to restrict a method of splitting the target node.
    Type: Application
    Filed: December 13, 2017
    Publication date: November 28, 2019
    Inventors: Yukinobu YASUGI, Tomoko AONO, Tomohiro IKAI
  • Publication number: 20190246108
    Abstract: To improve the coding efficiency of intra-frame prediction of CU obtained by picture split. The present disclosure varies, based on the type of intra-frame prediction mode and/or the frequency of occurrence, the method of deriving a list used in estimation of the intra-frame prediction mode, and the binarization method in a case of entropy coding the intra-frame prediction mode.
    Type: Application
    Filed: August 23, 2017
    Publication date: August 8, 2019
    Inventors: TOMOKO AONO, YUKINOBU YASUGI, TOMOHIRO IKAI
  • Publication number: 20190230355
    Abstract: An image decoding apparatus (31) includes a CT information decoding unit (10) configured, in each coding tree, to decode a constraint flag indicating whether or not to constrain decoding a prediction unit, and a CU decoding unit (20) configured, in the coding tree, to decode a prediction unit in a coding node to be decoded first and to not decode a prediction unit in another coding node, in a case that the constraint flag indicates constraint of decoding the prediction unit. According to the present invention, it is possible to reduce a coding amount of PU and complexity of coding/decoding an image while maintaining a split with a high degree of freedom by CT split (QT split and BT split).
    Type: Application
    Filed: August 24, 2017
    Publication date: July 25, 2019
    Applicants: SHARP KABUSHIKI KAISHA, FG Innnovation Company Limited
    Inventors: TOMOHIRO IKAI, TOMOKO AONO
  • Publication number: 20190182498
    Abstract: An image decoding apparatus is provided with a CT information decoding unit that decodes division information indicating a division method for binary tree division with respect to a coding node of a coding tree unit, and performs the binary tree division with respect to the coding node by referring to the division information of another decoded coding node.
    Type: Application
    Filed: August 1, 2017
    Publication date: June 13, 2019
    Inventors: YOSHIYA YAMAMOTO, YUKINOBU YASUGI, TOMOHIRO IKAI, TOMOKO AONO
  • Publication number: 20170257663
    Abstract: Different applications are activated for respective multiple programs. A component demultiplexing unit (34) that receives an MH-AIT (141) indicating an application corresponding to each of packages, a combining unit (38) and an audio decoding unit (36) that reproduce one of the packages, and a data broadcasting control unit (37) that controls an application corresponding to a package, which is being reproduced, by referring to the MH-AIT (141) are included.
    Type: Application
    Filed: August 27, 2015
    Publication date: September 7, 2017
    Inventors: Tomoko AONO, Hisao KUMAI, Maki TAKAHASHI, Shuhichi WATANABE
  • Patent number: 9641865
    Abstract: An image filter (100) for calculating a pixel value of target pixel in an output image from a pixel value of each of a pixel or pixels belonging to a filter area in an input image by using a filter coefficient vector V, is configured to include a filter coefficient vector changing section (120) for changing the filter coefficient vector V according to at least either where the target area is in the input image, or where the target pixel is in the output image.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: May 2, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomohiro Ikai, Yukinobu Yasugi, Tomoko Aono
  • Publication number: 20170041636
    Abstract: An image filter (100) for calculating a pixel value of target pixel in an output image from a pixel value of each of a pixel or pixels belonging to a filter area in an input image by using a filter coefficient vector V, is configured to include a filter coefficient vector changing section (120) for changing the filter coefficient vector V according to at least either where the target area is in the input image, or where the target pixel is in the output image.
    Type: Application
    Filed: October 25, 2016
    Publication date: February 9, 2017
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomohiro IKAI, Yukinobu YASUGI, Tomoko AONO
  • Patent number: 9514519
    Abstract: An image filter (100) for calculating a pixel value of target pixel in an output image from a pixel value of each of a pixel or pixels belonging to a filter area in an input image by using a filter coefficient vector V, is configured to include a filter coefficient vector changing section (120) for changing the filter coefficient vector V according to at least either where the target area is in the input image, or where the target pixel is in the output image.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: December 6, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomohiro Ikai, Yukinobu Yasugi, Tomoko Aono
  • Publication number: 20150242999
    Abstract: An image filter (100) for calculating a pixel value of target pixel in an output image from a pixel value of each of a pixel or pixels belonging to a filter area in an input image by using a filter coefficient vector V, is configured to include a filter coefficient vector changing section (120) for changing the filter coefficient vector V according to at least either where the target area is in the input image, or where the target pixel is in the output image.
    Type: Application
    Filed: April 27, 2015
    Publication date: August 27, 2015
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomohiro IKAI, Yukinobu YASUGI, Tomoko AONO